Split binary file...

[Condor06]

Is there some simple way to split a big binary file (over 500 MBs) into the smaller parts, and after join them back to primordial original file?

[bvdet]

I split a JPEG file and successfully joined the parts with the following code:

fn = 'image.jpg'
 
# Split into 4 files
f = open(fn, 'rb')
data = f.read()
f.close()
 
bytes = len(data)
inc = (bytes+4)/4
fileNames = []
for i in range(0, bytes+1, inc):
    fn1 = "file%s" % i
    fileNames.append(fn1)
    f = open(fn1, 'wb')
    f.write(data[i:i+inc])
    f.close()
 
new_file = 'image_joined.jpg'
dataList = []
 
for fn in fileNames:
    f = open(fn, 'rb')
    dataList.append(f.read())
    f.close()
 
f = open(new_file, 'wb')
for data in dataList:
    f.write(data)
f.close()

[Condor06]

Thanks very much, @bvdet, I will try this code...

[Condor06]

Very useful code, works for me (even on the large files), fast and simple!
Thanks one more time...

King regards,
Stole

[bvdet]

You are welcome! I am glad it works for you.

-BV